/Engine/Plugins/Developer/Concert/ConcertUI/ConcertSharedSlate/Source/ConcertSharedSlate/Public/Session/Browser/Items/ConcertGroupTreeItem.h
FConcertGroupTreeItem ( [FGetSessions](API\Plugins\ConcertSharedSlate\Session\Browser\Items\FConcertGroupTreeItem\FGetSessions) GetSessionsFunc, [TSet](API\Runtime\Core\Containers\TSet)< [FConcertSessionTreeItem::EType](API\Plugins\ConcertSharedSlate\Session\Browser\Items\FConcertSessionTreeItem\EType) > AllowedTypes )